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Functions
See also Haskell Function, Function (mathematics), Function (computer science), Major programming topics, Programming topics, Programming languages, Software engineering topics, Software architecture, Software architecture topics, Awesome lists
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”Functions are expressions that have parameters, and take arguments.“ https://docs.scala-lang.org/tour/basics.html
Methods are functions that belong to the class.
“Functions are self-contained chunks of code that perform a specific task. You give a function a name that identifies what it does, and this name is used to “call” the function to perform its task when needed.” https://docs.swift.org/swift-book/LanguageGuide/Functions.html
- Snippet from Wikipedia: Function (computer programming)
In computer programming, a function, subprogram, procedure, method, routine or subroutine is a callable unit that has a well-defined behavior and can be invoked by other software units to exhibit that behavior.
Callable units provide a powerful programming tool. The primary purpose is to allow for the decomposition of a large and/or complicated problem into chunks that have relatively low cognitive load and to assign the chunks meaningful names (unless they are anonymous). Judicious application can reduce the cost of developing and maintaining software, while increasing its quality and reliability.
Callable units are present at multiple levels of abstraction in the programming environment. For example, a programmer may write a function in source code that is compiled to machine code that implements similar semantics. There is a callable unit in the source code and an associated one in the machine code, but they are different kinds of callable units – with different implications and features.
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